diff options
Diffstat (limited to 'libstdc++-v3/testsuite/23_containers/deque/allocator/move_assign-2.cc')
-rw-r--r-- | libstdc++-v3/testsuite/23_containers/deque/allocator/move_assign-2.cc | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/libstdc++-v3/testsuite/23_containers/deque/allocator/move_assign-2.cc b/libstdc++-v3/testsuite/23_containers/deque/allocator/move_assign-2.cc new file mode 100644 index 00000000000..5f337a07099 --- /dev/null +++ b/libstdc++-v3/testsuite/23_containers/deque/allocator/move_assign-2.cc @@ -0,0 +1,78 @@ +// Copyright (C) 2012-2014 Free Software Foundation, Inc. +// +// This file is part of the GNU ISO C++ Library. This library is free +// software; you can redistribute it and/or modify it under the +// terms of the GNU General Public License as published by the +// Free Software Foundation; either version 3, or (at your option) +// any later version. + +// This library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU General Public License for more details. + +// You should have received a copy of the GNU General Public License along +// with this library; see the file COPYING3. If not see +// <http://www.gnu.org/licenses/>. + +// { dg-do compile } +// { dg-options "-std=gnu++11 -fno-access-control" } + +// libstdc++/52591 + +#include <deque> +#include <memory> +#include <type_traits> + + +// As an extension we allow move-assignment of std::deque when the element +// type is not MoveAssignable, as long as the allocator type propagates or +// is known to always compare equal. + +struct C +{ + C& operator=(C&&) = delete; +}; + +template<typename T> +struct A1 : std::allocator<T> +{ + template<typename U> struct rebind { typedef A1<U> other; }; + + A1() = default; + template<typename U> A1(const A1<U>&) { } + + using propagate_on_container_move_assignment = std::true_type; +}; + +void test01() +{ + using test_type = std::deque<C, A1<C>>; + static_assert(std::is_move_assignable<test_type>::value, + "deque is move-assignable if allocator propagates"); +} + +template<typename T> +struct A2 : std::allocator<T> +{ + template<typename U> struct rebind { typedef A2<U> other; }; + + A2() = default; + template<typename U> A2(const A2<U>&) { } + + using propagate_on_container_move_assignment = std::false_type; +}; + +namespace __gnu_cxx +{ + template<typename T> + struct __allocator_always_compares_equal<A2<T>> : std::true_type + { }; +} + +void test02() +{ + using test_type = std::deque<C, A2<C>>; + static_assert(std::is_nothrow_move_assignable<test_type>::value, + "deque is nothrow move-assignable if allocator is always equal"); +} |